This machine was given to me by my cousin. It is currently running Windows XP SP3. I'm trying to avoid a complete format because I don't have an OS disk nor recovery disk. Here's the problem, I cannot get any antivirus nor task manager to load. I installed Avast and Malwarebytes without any problems but when I click them nothing happens. I'm using Chrome atm and I'm able to access sites with ease, no popups or redirects. Does this sound like the characteristics of a virus or something else?